{"id":"aae041d2-b8d9-45a1-8ee9-5504c6e41888","shortId":"a4xLED","kind":"x402","title":"Pay-per-call employee data endpoint on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call employee data endpoint on Base via x402, settled in USDC at $0.02/request.","description":"This x402-enabled endpoint at lowpaymentfee.com serves employee data (specifically record ID 164) behind a micropayment wall. It accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum charge of 20,000 base units, which equals $0.02 per request (USDC uses 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe provider, lowpaymentfee.com, hosts a broader catalog of pay-per-call APIs spanning data/analytics, AI/ML (sentiment analysis, summarization, classification, embeddings), finance/Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request. However, this specific listing covers only the `/api/v1/employees/164` resource, which appears to be a sample or demonstration employee-record endpoint.\n\nDocumentation is extremely sparse. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no description of request parameters or response fields, and no usage examples beyond what can be inferred from the x402 challenge. The endpoint is confirmed live (returns a proper 402 challenge), but the actual response payload structure is unknown.","tags":[],"capabilities":["x402-payment","usdc-base","employee-data","json-api","pay-per-call","no-api-key","micropayment"],"categories":["data"],"synonyms":["employee record API","staff data endpoint","HR data API","lowpaymentfee","x402 employee endpoint","Base USDC micropayment API"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content","No OpenAPI or schema describing request parameters or response structure","The endpoint targets a single hardcoded employee ID (164); unclear if other IDs are available or what the data contains","Response payload structure is completely unknown"],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/164","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/employees/164","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 402 challenge with clear pricing. However, there is no OpenAPI schema, no documentation of request/response fields, no examples, and the docs pages are empty. The endpoint path (/employees/164) suggests a demo or sample resource with unclear real-world 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'/request':17,34 '0.02':16,33,83,154 '000':78 '0x8335':70 '164':48 '20':77 '2913':71 '402':234 '6':88 'Base USDC micropayment API' 'HR data API' 'accept':54 'actual':238 'ai/ml':127 'analysi':129 'api':91,124,184 'appear':167 'attach':100 'base':9,26,65,79 'behind':49 'beyond':217 'broader':117 'call':4,21,123 'caller':98 'catalog':118 'challeng':225,235 'charg':75 'classif':131 'confirm':229 'connect':193 'content':199 'contract':69 'convers':147 'cover':161 'data':6,23,44 'data/analytics':126 'decim':89 'demonstr':173 'descript':206 'doc':183 'document':178 'embed':132 'employe':5,22,43,175 'employee record API' 'employee-data' 'employee-record':174 'enabl':38 'endpoint':7,24,39,150,177,227 'equal':82 'estim':141 'exampl':216 'exchang':136 'extrem':180 'feed':135 'field':212 'finance/web3':133 'gas':140 'generat':148 'geocod':145 'header':105 'host':115 'howev':157 'id':47 'infer':221 'infrastructur':143 'json':59 'json-api' 'key':92 'limit':95 'list':152,160 'live':230 'lowpaymentfee' 'lowpaymentfee.com':41,114 'maximum':74 'micropay':51 'micropayment' 'network':66 'no-api-key' 'openapi':203 'page':188 'paramet':209 'pay':2,19,121 'pay-per-cal':1,18,120 'pay-per-call' 'payload':240 'payment':60,104,110 'per':3,20,84,122,155 'post':55 'price':134,185 'prompt':195 'proof':111 'proper':233 'provid':113 'quot':139 'rate':94,137 'readm':187 'record':46,176 'render':190 'request':56,85,156,208 'requir':97 'resourc':165 'respons':211,239 'return':58,231 'sampl':171 'schema':204 'sentiment':128 'serv':42 'settl':12,29,62 'simpli':99 'span':125 'spars':181 'specif':45,159 'staff data endpoint' 'structur':241 'substant':198 'summar':130 'token':138 'unit':80 'unknown':243 'usag':215 'usdc':14,31,68,86 'usdc-base' 'use':67,87 'util':144 'valid':108,146 'via':10,27 'wall':52 'wallet':194 'x':103 'x-payment':102 'x402':11,28,37,109,224 'x402 employee endpoint' 'x402-enabled':36 'x402-payment'","prices":[{"id":"d9fcc041-7aa1-41b6-844e-70d1e03374db","listingId":"aae041d2-b8d9-45a1-8ee9-5504c6e41888","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"20000","chain":"base","payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/employees/164","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:15.362Z"}],"sources":[{"listingId":"aae041d2-b8d9-45a1-8ee9-5504c6e41888","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/164","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:15.362Z","lastSeenAt":"2026-04-24T21:04:37.683Z"}],"details":{"listingId":"aae041d2-b8d9-45a1-8ee9-5504c6e41888","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/164 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge requiring USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/employees/164"},{"claim":"maxAmountRequired is 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02","source_url":"https://lowpaymentfee.com/api/v1/employees/164"},{"claim":"All listed endpoints priced at $0.02 per request with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Provider offers APIs across data/analytics, AI/ML, finance/Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving employee record data on-demand with per-call USDC micropayments","Demonstrating x402 payment protocol integration on Base network","Agent-driven data retrieval without pre-provisioned API keys"],"bestFor":["Developers experimenting with x402 micropayment protocol","Agents needing keyless, pay-per-call data access on Base","Low-volume lookups where subscription pricing is unnecessary"],"notFor":["Production HR systems requiring bulk employee data retrieval","Use cases needing detailed API documentation or SLAs","Applications requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:16.73Z"},"updatedAt":"2026-04-24T21:04:37.683Z"}}